Great idea, you go first to show us how it is done.
The bible certainly says for the rich to “use the mammon of unrighteousness” to win friends that will meet them in eternal dwellings.
If the lavishness of the Vatican truly is an evangelism tool, far be it from me to deny that it is what the Lord made it.
I’m, however, skeptical about such things. Even in the Catholic system of viewing affairs, most of the recognized saints dwelt rather frugally.